Theory of Love 2019 (Thailand) is Thailand drama premiere on May 25, 2019 on GMM 25
Third is a filmology major and a member of the Savage team along with his best friends Too, Bone, and Kai, but he holds a secret. Third has been secretly in love with one of his best friends for three years. Kai.
For three years he has cultivated his selfless love in his heart, silently supporting and loving Kai while knowing there is absolutely no future between them because Kai is absolutely straight. Kai is as straight as they come. And an absolute player. What's worse? He has a no dating friends policy.
How long can you love silently while watching your best friend bring a different girl back every night? Third has tried, for years he has tried to stop, to just think of Kai as his friend, but each time he has been unsuccessful. For as easy as it is to fall in love, to stop is just as hard. Maybe even harder.
That is, until one night he finds out something that breaks him completely.
But when Third decides to stop. Kai decides to start.
(Source: Soju at MyDramaList)